Traffic Simulator

• generate mock traffic
• for now just GET requests

API

Basics

const{ TrafficSimulator,SECOND}=require('traffic-simulator');constgraph={/* see below */};constopts={delayRate: 1*SECOND,minDepth: 2,maxDepth: 20,minTmOnPage: 1*SECOND,maxTmOnPage: 30*SECOND,nClients: 50,doLog: true,};constts=newTrafficSimulator(graph,opts);ts.simulate();

Default Options

constMILLISEC=1;constSECOND=1000*MILLISEC;constDEFAULTS={nClients: 10,delayRate: 1*SECOND,// time between clients are spawnedminTmOnPage: 3*SECOND,maxTmOnPage: 120*SECOND,maxDepth: 20,// max #clicks that each client makesminDepth: 2,doLog: true,}

Overridable Methods (via Inheritance)

interfacePrintable{toString(): string;}protectedgetrandURL(): string;// start URL when creating a new client workerprotectedgetrandDepth(): number;// length of new client worker tourprotectedgetrandTmOnPg(): number;// time on the current page after each transitionprotectednameFunct(idx: number): string;// name for new client workersprotectedwarn(msg: Printable): void;// defaults to console.warnprotectedlog(msg: Printable): void;// defaults to console.log// You will have access to all opts: this.nClients, this.delayRate ...

EventEmitter API

The following events are emitted along with the data specified in parenthesis.

• randURL(url: string)
• depth(workerName: string)
• exit(workerName: string)
• null(workerName: string)
• spent(workerName: string, url: string, timeSpent: number)
• spawn({ workerName: string, url: string, depth: number }, atTime: Date)

Link Graph

For a complete example see examples/simple.ts.

// adjacency list (floats are transition PROBABILITIES, they MUST add up to 1.0)// // stackoverflow => google (p = .2)// stackoverflow => exit (p = .8)// news.ycombinator => news.ycombinator => .2// news.ycombinator => exit (p = .8)// // etc.constEXAMPLE_GRAPH={'https://stackoverflow.com/questions/951021/what-is-the-javascript-version-of-sleep': {'https://www.google.co.uk/search?newwindow=1&source=hp&ei=cVDHXPOtF5HosAfKnJrgDw&q=javascript+sleep+await&oq=jav&gs_l=psy-ab.1.0.35i39l2j0i20i263j0j0i131j0j0i20i263j0i131j0j0i131.889.1455..2407...0.0..0.131.347.3j1......0....1..gws-wiz.....0.8oIEbZdX7Es': 0.2,'%exit%': 0.8,},'https://news.ycombinator.com/': {'https://news.ycombinator.com/news?p=2': 0.2,'%exit%': 0.8,},'https://news.ycombinator.com/news?p=2': {'https://news.ycombinator.com/news?p=3': 0.1,'%exit%': 0.9,},'https://www.google.co.uk/search?newwindow=1&source=hp&ei=cVDHXPOtF5HosAfKnJrgDw&q=javascript+sleep+await&oq=jav&gs_l=psy-ab.1.0.35i39l2j0i20i263j0j0i131j0j0i20i263j0i131j0j0i131.889.1455..2407...0.0..0.131.347.3j1......0....1..gws-wiz.....0.8oIEbZdX7Es': {'https://stackoverflow.com/questions/951021/what-is-the-javascript-version-of-sleep': 0.8,'https://flaviocopes.com/javascript-sleep/': 0.2,},'https://github.com/': {'https://github.com/': 0.4,'https://github.com/search?utf8=%E2%9C%93&q=node&type=': 0.5,'%exit%': 0.1,},'https://www.w3schools.com/jsref/met_win_settimeout.asp': {'https://www.w3schools.com/jsref/prop_win_opener.asp': 0.1,'https://www.w3schools.com/jsref/prop_win_sessionstorage.asp': 0.2,'%exit%': 0.7,},'https://github.com/search?utf8=%E2%9C%93&q=node&type=': {'https://github.com/nodejs/node': 0.6,'%exit%': 0.4,},};